16405696 has 28 divisors (see below), whose sum is σ = 33609280. Its totient is φ = 7937280.

The previous prime is 16405681. The next prime is 16405703. The reversal of 16405696 is 69650461.

It is a super-2 number, since 2×16405696² = 538293722488832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151 + ... + 6118.

Almost surely, 2^16405696 is an apocalyptic number.

16405696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16405696 is an abundant number, since it is smaller than the sum of its proper divisors (17203584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16405696 is an equidigital number, since it uses as much as digits as its factorization.

16405696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312 (or 8302 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 16405696 is about 4050.3945486829. The cubic root of 16405696 is about 254.0962290644.

The spelling of 16405696 in words is "sixteen million, four hundred five thousand, six hundred ninety-six".